Active to passive transition in the oxidation of silicon carbide at high temperature and low pressure in molecular and atomic oxygen

1992 ◽  
Vol 27 (3) ◽  
pp. 697-703 ◽  
Author(s):  
M. Balat ◽  
G. Flamant ◽  
G. Male ◽  
G. Pichelin
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Atomic Oxygen ◽  
Low Pressure ◽  
Passive Transition

CVD Coating of Ceramic Monofilaments

1991 ◽  
Vol 250 ◽  
Author(s):  
Jason R. Guth
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Hydrogen Reduction ◽  
Low Pressure ◽  
Refractory Metals ◽  
High Toughness ◽  
Composite Systems ◽  
Silicon Carbide Fibers ◽  
Sapphire Fibers

AbstractIn many composite systems it has become apparent that coatings on the reinforcements are necessary to achieve high toughness materials. In order to examine materials which may be used as coatings on ceramic monofilaments and remain stable in high temperature, oxidizing environments, the deposition of a number of refractory metals has been attempted. The results of coating experiments using silicon carbide fibers as substrates as well as general observations concerning the prospects of continuously coating long lengths of fibers will be discussed. The materials studied include carbon, cobalt, zirconium, molybdenum, tantalum, tungsten, and iridium. Carbon has been deposited from methane and propylene onto both SiC and sapphire fibers. Deposition of the metals has been achieved by direct chlorination of the metals followed by hydrogen reduction at the fiber. Iridium(III)2,4-pentanedionate has been used to deposit iridium metal. All metals were deposited at low pressure in a hot wall reactor with fibers continuously spooled through the reactor.

DURALCAN F3S.xxS

Alloy Digest ◽  
1994 ◽  
Vol 43 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Compressive Strength ◽  
Aluminum Alloy ◽  
High Temperature ◽  
Base Alloy ◽  
Alloy Matrix ◽  
Reinforced Composite ◽  
Temperature Performance ◽  
Aluminum Alloy Matrix

Abstract Duralcan F3S.xxS is a heat treatable aluminum alloy-matrix gravity composite. The base alloy is similar to Aluminum 359 (Alloy Digest Al-188, July 1969); the discontinuously reinforced composite is silicon carbide. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness and fatigue. It also includes information on high temperature performance. Filing Code: AL-329. Producer or source: Alcan Aluminum Corporation.

Low-Pressure, High-Temperature Oxidation of Tungsten

JOM ◽  
1961 ◽  
Vol 13 (7) ◽  
pp. 490-493 ◽  
Author(s):  
R. A. Perkins ◽  
D. D. Crooks
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Low Pressure ◽  
Temperature Oxidation
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